Hi Arnaldo and Peter, On Thu, 17 Jul 2014 10:09:43 -0300, Arnaldo Carvalho de Melo wrote: > Em Thu, Jul 17, 2014 at 10:40:11AM +0200, Peter Zijlstra escreveu: >> On Thu, Jul 17, 2014 at 05:31:14PM +0900, Namhyung Kim wrote: >> > On Thu, Jul 17, 2014 at 5:26 PM, Peter Zijlstra <pet...@infradead.org> >> > wrote: >> > > On Thu, Jul 17, 2014 at 05:21:06PM +0900, Namhyung Kim wrote: >> > >> When perf stat runs multiple times via -r option, it's sometimes >> > >> useful for a workload to know which run it executing. So pass new >> > >> PERF_STAT_RUN environment variable to the workload for each run >> > >> (starting from 1). > >> > > This seems counter intuitive, runs should be _identical_ otherwise >> > > there's no point. That means the workload should very much _not_ know >> > > these things. > >> > But I think it can be useful if a workload wants to save logfiles >> > based on the iteration number for example. If it doesn't want, it can >> > just ignore. :) > >> That's the wrong way around. Also, there's --pre and --post hooks to >> preserve logfiles if you really have to do that kind of thing. > > Agreed, one can script this using --pre or --post if needed.
Hmm... okay, I'll drop this then. Thanks, Namhyung -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
